A new trailer for Ron Howard’s forthcoming documentary on the Beatles,The Beatles: Eight Days A Week – The Touring Years, captures the band members worrying about the negative aspects of their rocketship rise to fame. In Ringo Starr’s words, “We can’t go on forever as four clean little mop-tops playing ‘She Loves You.'”

Howard’s movie promises to deliver new and enhanced footage from the Beatles’ live shows. “We’ll not only be able to digitally repair [the Super 8 footage], but we’ve also been finding the original recordings,” he told Rolling Stone in 2014. “We can now sync it up and create a concert experience so immersive and so engaging, I believe you’re going to actually feel like you’re somewhere in the Sixties, seeing what it was like to be there, feeling it and hearing it.”

The trailer shows the screams of enthusiastic fans who strained against police barriers for a glimpse of the Beatles and chase after the band. The hullabaloo made it harder to focus on the music itself. Speaking with Rolling Stone earlier this year, the Who’s Roger Daltrey recounted his experience seeing the Fab Four live. “I remember not hearing one bloody note they played,” he noted. “You heard the music for about two seconds, if that, and then it was just a barrage of high-pitched wails.”

This created a tough environment for any band. “We were kids,” Paul McCartney explains in the trailer. “We were all pretty scared.” The pressure-cooker environment imbued the group with an “us against the world” mentality. “We were normal and the rest of the world was crazy,” George Harrison recalls. And it also caused them to worry about artistic stagnation. According to McCartney, “We all started to get pretty fed up. We were looking for somewhere new to go.”

The Beatles: Eight Days a Week — The Touring Years hits theaters on September 15th and Hulu on September 17th.